src/patches/suse-2.6.27.39/patches.fixes/uv-bios_call_memprotect.diff

   1 From: Russ Anderson <rja@sgi.com>
   2 Subject: Add UV bios call to change memory protections.
   3 References: bnc#442455
   4
   5
   6 Add UV bios call to change memory protections.
   7
   8 Signed-off-by: Russ Anderson <rja@sgi.com>
   9 Acked-by: Bernhard Walle <bwalle@suse.de>
  10
  11 ---
  12  arch/x86/kernel/bios_uv.c |    8 ++++++++
  13  include/asm-x86/uv/bios.h |   10 +++++++++-
  14  2 files changed, 17 insertions(+), 1 deletion(-)
  15
  16 Index: linux/arch/x86/kernel/bios_uv.c
  17 ===================================================================
  18 --- linux.orig/arch/x86/kernel/bios_uv.c        2008-11-05 11:12:16.101949483 -0600
  19 +++ linux/arch/x86/kernel/bios_uv.c     2008-11-05 11:13:15.289411601 -0600
  20 @@ -134,6 +134,14 @@ uv_bios_mq_watchlist_free(int blade, int
  21  }
  22  EXPORT_SYMBOL_GPL(uv_bios_mq_watchlist_free);
  23
  24 +s64
  25 +uv_bios_change_memprotect(u64 paddr, u64 len, enum uv_memprotect perms)
  26 +{
  27 +       return uv_bios_call_irqsave(UV_BIOS_MEMPROTECT, paddr, len,
  28 +                                       perms, 0, 0);
  29 +}
  30 +EXPORT_SYMBOL_GPL(uv_bios_change_memprotect);
  31 +
  32  s64 uv_bios_freq_base(u64 clock_type, u64 *ticks_per_second)
  33  {
  34         return uv_bios_call(UV_BIOS_FREQ_BASE, clock_type,
  35 Index: linux/include/asm-x86/uv/bios.h
  36 ===================================================================
  37 --- linux.orig/include/asm-x86/uv/bios.h        2008-11-05 11:12:16.117951501 -0600
  38 +++ linux/include/asm-x86/uv/bios.h     2008-11-05 11:13:15.301413114 -0600
  39 @@ -34,7 +34,8 @@ enum uv_bios_cmd {
  40         UV_BIOS_GET_SN_INFO,
  41         UV_BIOS_FREQ_BASE,
  42         UV_BIOS_WATCHLIST_ALLOC,
  43 -       UV_BIOS_WATCHLIST_FREE
  44 +       UV_BIOS_WATCHLIST_FREE,
  45 +       UV_BIOS_MEMPROTECT
  46  };
  47
  48  /*
  49 @@ -82,6 +83,12 @@ union uv_watchlist_u {
  50         };
  51  };
  52
  53 +enum uv_memprotect {
  54 +       UV_MEMPROT_RESTRICT_ACCESS,
  55 +       UV_MEMPROT_ALLOW_AMO,
  56 +       UV_MEMPROT_ALLOW_RW
  57 +};
  58 +
  59  /*
  60   * bios calls have 6 parameters
  61   */
  62 @@ -94,6 +101,7 @@ extern s64 uv_bios_freq_base(u64, u64 *)
  63  extern int uv_bios_mq_watchlist_alloc(int, void *, unsigned int,
  64                                         unsigned long *);
  65  extern int uv_bios_mq_watchlist_free(int, int);
  66 +extern s64 uv_bios_change_memprotect(u64, u64, enum uv_memprotect);
  67
  68  extern void uv_bios_init(void);
  69